Peripheral image processing for display screen with a curved surface

Patent metadata

Field	Value
Publication number	US-9799095-B2
Application number	US-201414472745-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Oct 7, 2013
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

Provided is an image processing device that includes: an image generation section configured to generate a peripheral image in an outer periphery of a first frame image to generate a second frame image that includes the first frame image and the peripheral image; and a coordinate conversion section configured to perform coordinate conversion on the second frame image to generate a third frame image.

First claim

What is claimed is:

1. An image processing device, comprising:
an image generation circuitry configured to generate a peripheral image in an outer periphery of a first frame image to generate a second frame image that includes the first frame image and the peripheral image; and
a coordinate conversion circuitry configured to
decide a shape of a virtual screen, the shape of the virtual screen being different from a shape of a display screen of a display circuitry,
generate a look-up table based at least in part on the shape of the virtual screen,
perform coordinate conversion on the second frame image based on the look-up table to generate a third frame image, the look-up table indicating a relationship between a coordinate in the second frame image and a coordinate in the third frame image, the third frame image is configured to be displayed on the display circuitry having the display screen with a curved surface, and
obtain an image generation range where the peripheral image is to be generated based on a characteristic of the coordinate conversion,

wherein the image generation circuitry is configured to generate the peripheral image within the image generation range, and
wherein the peripheral image comprises a portion of the first frame image.

2. The image processing device according to claim 1 , wherein the display circuitry is configured to allow a curvature of the display screen to be varied.

3. The image processing device according to claim 1 , wherein the coordinate conversion circuitry generates the look-up table based at least in part on the shape of the display screen of the display circuitry.

4. The image processing device according to claim 1 , wherein the coordinate conversion circuitry decides, based on a content of the first frame image, the shape of the virtual screen.

5. The image processing device according to claim 4 , wherein the coordinate conversion circuitry includes a plurality of display modes that differ in the shape of the virtual screen from one another, and decides the shape of the virtual screen by selecting, based on the content, one of the plurality of display modes.

6. The image processing device according to claim 1 , wherein the coordinate conversion circuitry decides, based on an instruction from a user, the shape of the virtual screen.

7. The image processing device according to claim 1 , wherein the coordinate conversion circuitry generates the look-up table based at least in part on a viewpoint position of a user.

8. The image processing device according to claim 7 , wherein the coordinate conversion circuitry obtains, based on the viewpoint position and on an instruction from the user, a virtual viewpoint position and generates, based at least in part on the virtual viewpoint position, the look-up table.

9. The image processing device according to claim 1 , wherein the first frame image includes one or more partial images, and the image generation circuitry generates the peripheral image by arranging one or more images that are same as the respective one or more partial images in the outer periphery of the first frame image.

10. The image processing device according to claim 9 , wherein the one or more partial images include an image adjacent to at least one of four sides of the first frame image within the first frame image.

11. The image processing device according to claim 9 , wherein the one or more partial images include a partial image that is adjacent to one of two or more matching images, the two or more matching images being selected by pattern matching within the first frame image.

12. The image processing device according to claim 1 , wherein the image generation range is correlated with an amount of a distortion generated by the coordinate conversion.

13. The image processing device according to claim 1 , wherein
the first frame image comprises a plurality of first frame images including a first image and second image, the first image preceding the second image,
the image generation circuitry is supplied with a series of the plurality of first frame images on a time axis,
the image generation circuitry generates, based on the first image and the second image, the peripheral image in an outer periphery of the second image.

14. The image processing device according to claim 1 , wherein the image generation range where the peripheral image is to be generated is a dynamic peripheral image generation range.

15. An image processing method, the method comprising:
generating, with an image generation circuitry, a peripheral image in an outer periphery of a first frame image to generate a second frame image that includes the first frame image and the peripheral image;
deciding, with a coordinate conversion circuitry, a shape of a virtual screen, the shape of the virtual screen being different from a shape of a display screen of a display circuitry;
generating, with the coordinate conversion circuitry, a look-up table based at least in part on the shape of the virtual screen;
performing, with the coordinate conversion circuitry, a coordinate conversion on the second frame image based on the look-up table to generate a third frame image, the look-up table indicating a relationship between a coordinate in the second frame image and a coordinate in the third frame image, the third frame image is configured to be displayed on the display circuitry having the display screen with a curved surface; and
obtaining, with the coordinate conversion circuitry, an image generation range where the peripheral image is to be generated based on a characteristic of the coordinate conversion,
wherein generating the peripheral image includes generating the peripheral image within the image generation range, and
wherein the peripheral image comprising a portion of the first frame image.

16. The image processing method according to claim 15 , wherein the image generation range where the peripheral image is to be generated is a dynamic peripheral image generation range.

17. A display device, comprising:
an image generation circuitry configured to generate a peripheral image in an outer periphery of a first frame image to generate a second frame image that includes the first fame image and the peripheral image;
a coordinate conversion circuitry configured to
decide a shape of a virtual screen,
generate a look-up table based at least in part on the shape of the virtual screen,
perform coordinate conversion on the second frame image based on the look-up table to generate a third frame image, the look-up table indicating a relationship between a coordinate in the second frame image and a coordinate in the third frame image, and
obtain an image generation range where the peripheral image is to be generated based on a characteristic of the coordinate conversion; and
a display circuitry configured to perform a display operation based on the third frame image, the third frame image is configured to be displayed on the display circuitry having a display screen with a curved surface, wherein a shape of the display screen of the display circuitry is different from the shape of the virtual screen,

wherein the image generation circuitry is configured to generate the peripheral image within the image generation range, and
wherein the peripheral image comprises a portion of the first frame image.

18. The display device according to claim 17 , wherein the image generation range where the peripheral image is to be generated is a dynamic peripheral image generation range.

Assignees

• Joled Inc

Inventors

• Miki Daisuke
• Yamashita Junichi

Classifications

• G06T3/005 Primary

  Physics · mapped topic

• G09G2380/00

  Specific applications · CPC title

• G09G3/001

  using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background (slide projectors per se G03B23/00 = 42 HP) · CPC title

• G09G3/03

  specially adapted for displays having non-planar surfaces, e.g. curved displays · CPC title

• G09G2380/02

  Flexible displays · CPC title